We built this linear slide from a 1/2-inch steel rod and multiple bearing surfaces. It works, but we don't recommend building it if you value your sanity.
Once uou've bought or salvaged a set of motors, you'll need a controller. The controller provides the interface to the computer, drives the motors and can provide some simple feedback to the computer. The stepper controller has to be powerful enough to drive the motors you've selected. We sifted through lots of stepper controller designs looking for one that presented the best value. In the end we found this design for a relatively simple parallel port interface that originally appeared in a 1994 issue of Nuts and Volts. Today, the expensive UCN5804B is only available as a surplus item, but now the entire controller can be built for about $22-$30 in parts. (If you use a heavier motor like the ones from the Imagewriter, you might need to add some separate power transistors.)The parts list at the link is a bit outdated, here's our updated shopping list.
3 - UCN5804B - alltronics.com
12 - 1N49355 Diodes - Part 625-1N4935 from Mouser.com
2 - .01uF Capacitors - Part 581-SR155C103KAT from Mouser.com
1 - 10uF Capacitor - Part 140-HTRL25V10-TB from Mouser.com
3 - 4.7k Resistor Network 652-4608X-101-4.7K from Mouser.com (Has an extra resistor, but works fine)
1 - D-Sub 25 pin Male - Mouser, RadioShack, etc.
1 - Barrel power connector - Whatever works for your power supply. (We used a spare 12V power brick)
Stranded Cat-5 is sufficient for wiring
Terminals and male headers are optional, see the page for the circuit.
Heat sinks for the 5804Bs are needed. We used some aluminum channel.
Copper clad PC board (We stock up on ebay every so often)
Etching solution - Ferric Chloride, etc.
hello frnds ...i am still adding the all latest informaton..and this topic is still remaning...i will add when i will find next..and plz visit it...u will find new things everyday...thanks
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